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Finding the Fourth Proportional to 256,538.92, 384,808.38 and 69,545.56

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Solution

The fourth proportional to 256,538.92, 384,808.38 and 69,545.56 is: 104,318.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,538.92 : 384,808.38 = 69,545.56 : x
  2. Step 2: Convert to fraction form
    256,538.92/384,808.38 = 69,545.56/x
  3. Step 3: Cross multiply
    256,538.92x = 384,808.38 × 69,545.56
  4. Step 4: Simplify right side
    256,538.92x = 26,761,714,279.79
  5. Step 5: Solve for x
    x = 26,761,714,279.79/256,538.92
  6. Step 6: Final answer
    x = 104,318.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.